我们通常用“”这样的方式来访问网站，而此时传输的内容是可能被别人截获的，因为其内容是通过明文传输，所以在传递一些隐私、以及密码相关的信息时，就显得非常的不安全。在一些比较正式的网站、以及一些银行相关的网站中，一些需要提交隐私或者重要级别比较高的密码时，都采用“https://”的方式，来将传输内容加密，从而保证用户安全和避免隐私的泄漏。
今天在这里，我就通过mod_ssl来使我们的服务器也支持https。（环境：CentOS 5.5）
1、安装mod_ssl
通过yum来在线安装mod_ssl
[root@300second ~]# yum -y install mod_ssl ← 在线安装mod_ssl
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: data.nicehosting.co.kr
* extras: data.nicehosting.co.kr
* updates: data.nicehosting.co.kr
addons | 951 B 00:00
addons/primary | 202 B 00:00
: [Errno 14] HTTP Error 403: Forbidden
Trying other mirror.
base | 1.1 kB 00:00
base/primary | 961 kB 00:40
base 2705/2705
: [Errno 14] HTTP Error 403: Forbidden
Trying other mirror.
extras | 2.1 kB 00:00
extras/primary_db | 156 kB 00:06
: [Errno 14] HTTP Error 403: Forbidden
Trying other mirror.
updates | 1.9 kB 00:00
updates/primary_db | 290 kB 00:12
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package mod_ssl.i386 1:2.2.3-53.el5.centos.3 set to be updated
--> Processing Dependency: httpd = 2.2.3-53.el5.centos.3 for package: mod_ssl
--> Processing Dependency: libdistcache.so.1 for package: mod_ssl
--> Processing Dependency: libnal.so.1 for package: mod_ssl
--> Running transaction check
---> Package distcache.i386 0:1.4.5-14.1 set to be updated
---> Package httpd.i386 0:2.2.3-53.el5.centos.3 set to be updated
--> Finished Dependency Resolution
Dependencies Resolved
================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
mod_ssl i386 1:2.2.3-53.el5.centos.3 updates 93 k
Installing for dependencies:
distcache i386 1.4.5-14.1 base 119 k
Updating for dependencies:
httpd i386 2.2.3-53.el5.centos.3 updates 1.2 M